The 2013 United States Mint Silver Proof Set includes a collection of uncirculated silver coins struck with a proof finish at the San Francisco Mint in 2013. This set consists of various denominations of silver coins, each with a fineness of 0.9, all certified by the U. The set includes a Certificate of Authenticity (COA) and Original Government Packaging (OGP) from the United States Mint, making it a valuable addition to any coin collection for those interested in American coins.